Datalogging on the FK8 is a very beneficial thing that any tuned Type R owner should regularly do.
Available Data Channels
Airflow
| Channel
|
Hondata
|
KTuner
|
Notes
|
| Air charge
|
AIRC
|
|
Used as an index for most tables instead of load. Percentage of cylinder filling.
|
| Manifold pressure
|
MAP
|
|
Measured in the intake manifold after the throttle body
|
| Boost pressure
|
BP
|
|
Measured in the charge pipe before the throttle body
|
| Boost pressure command
|
BPCMD
|
|
Technically commands manifold pressure, when BPCMD is -5 MAP will be -5 but BP will be 0psi.
|
| Throttle plate position
|
TPlate
|
|
|
| Air flow (volts)
|
AFM.v
|
|
The MAF sensor reports airflow in voltage rather than frequency.
|
| Air flow (grams/second)
|
AFM
|
|
Found by looking up AFM.v in the AFM flow chart table. Possibly slightly corrected by the ECU.
|
| Cylinder air mass (mg)
|
AFM.c
|
|
Not actually datalogged, but calculated as AFM / (RPM / 30) * 1000.
|
| Wastegate Position
|
WG
|
|
0mm-8mm
|
| Wastegate Position Command
|
WGCMD
|
|
0mm-8mm
|
| VTEC Spool
|
VTS
|
|
Whether or not VTEC is engaged. Generally, exhaust backpressure is decreased when VTEC is on.
|
| Intake Cam Angle
|
CAM
|
|
|
| Intake Cam Angle Command
|
CAMCMD
|
|
|
| Exhaust Cam Angle
|
EXCAM
|
|
|
| Exhaust Cam Angle Command
|
EXCAMCMD
|
|
|
| Atmospheric Pressure
|
PA
|
|
Used to limit boost tables at higher elevation
|
Fuel
| Channel
|
Hondata
|
KTuner
|
Notes
|
| Injector Duration
|
INJ
|
|
|
| Injector Duty Cycle
|
DUTY
|
|
Not actually datalogged, but calculated as INJ * RPM / 1200
|
| Fuel Pressure
|
DIFP
|
|
|
| Fuel Pressure Command
|
DIFPCMD
|
|
ECU limits this to 200 bars, which is also what the factory and basemap tunes target.
|
| Fuel Pump Duty
|
FuelP
|
N/A
|
Special channel added by Hondata only.
|
| Air Fuel Ratio
|
AF
|
|
|
| Air Fuel Ratio Command
|
AFCMD
|
|
|
| Short Term Fuel Trim
|
S.TRIM
|
|
|
| Long Term Fuel Trim
|
L.TRIM
|
|
Stored based on RPM. Changes much faster than other platforms.
|
| Fuel Status
|
Fuel Status
|
|
Standard OBD2 fuel status.
|
| Ethanol Percentage
|
Ethanol
|
|
For FK8s with a flex fuel sensor installed. Replaces the ECT2 sensor.
|
Engine
| Channel
|
Hondata
|
KTuner
|
Notes
|
| Engine speed
|
RPM
|
RPM
|
|
| Oil pressure
|
Oil. Press
|
|
|
| Ignition Advance
|
IGN
|
|
|
| Knock Retard
|
K.Retard 1-4
|
N/A
|
Only available on Hondata. Degrees of knock retard applied to each or all cylinders.
|
| Knock Level
|
K.Level
|
N/A
|
Only available on Hondata. Volume being reported by the knock sensor.
|
| Traction Control Retard
|
TC.R
|
N/A
|
Degrees of retard applied to regain traction by Hondata's TCS.
|
Temperature
| Channel
|
Hondata
|
KTuner
|
Notes
|
| Catalytic Converter
|
Cat.T
|
|
Modelled by the ECU, not physically measured as there is no sensor in the cat.
|
| Charge Air
|
IAT
|
IAT
|
Measured at the boost pressure sensor in the charge pipe after the intercooler. Generally IAT2 on other platforms.
|
| Intake Air
|
IAT2
|
IAT2
|
Measured at the MAF sensor after the intake. Generally IAT1 on other platforms.
|
| Radiator Inlet
|
ECT1
|
|
Temperature of coolant entering the radiator.
|
| Radiator Outlet
|
ECT2
|
|
Temperature of coolant leaving the radiator.
|
| Oil Temperature
|
N/A
|
N/A
|
There is no oil temperature sensor in the FK8.
|
Vehicle
| Channel
|
Hondata
|
KTuner
|
Notes
|
| Vehicle speed
|
VSS
|
|
|
| Gear
|
Gear
|
|
|
| Throttle Pedal Position
|
TPedal
|
|
Corresponds to a torque request table per gear and drive mode.
|
| Battery Voltage
|
BAT
|
|
|
| Wheel Speed
|
ABS.LF/RF/LR/RR
|
|
Not available on 2020+ due to new suspension controller.
|
| Clutch Position
|
Clutch.Pos
|
|
|
| Brake Pressure
|
Brake.Press
|
|
|
| Steering Angle
|
Steer Ang
|
|
|
| Steering Torque
|
Steer Trq
|
|
|
| G Sensor
|
G.Lat/G.Long
|
|
|
| Yaw Sensor
|
Yaw
|
|
|
| Wheel Slip
|
TC.Slip
|
N/A
|
Percentage of wheel slip as reported by Hondata TCS.
|
